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@jboner
jboner / latency.txt
Last active November 18, 2024 08:23
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@zoqaeski
zoqaeski / custom
Created October 12, 2012 18:14
xkbcomp keyboard layout dump
// $XDG_CONFIG_HOME/xkb/symbols/custom
// Makes ALT + CAPS_LOCK act as 3rd level switch
// Works sporadically
partial modifier_keys
xkb_symbols "alt_caps_mode_switch" {
key <CAPS> {
type[Group1]="PC_ALT_LEVEL2",
[ Caps_Lock, ISO_Level3_Shift ]
};
@XVilka
XVilka / TrueColour.md
Last active October 29, 2024 09:43
True Colour (16 million colours) support in various terminal applications and terminals

THIS GIST WAS MOVED TO TERMSTANDARD/COLORS REPOSITORY.

PLEASE ASK YOUR QUESTIONS OR ADD ANY SUGGESTIONS AS A REPOSITORY ISSUES OR PULL REQUESTS INSTEAD!

@prakhar1989
prakhar1989 / richhickey.md
Last active November 8, 2023 17:19 — forked from stijlist/gist:bb932fb93e22fe6260b2
richhickey.md

Rich Hickey on becoming a better developer

Rich Hickey • 3 years ago

Sorry, I have to disagree with the entire premise here.

A wide variety of experiences might lead to well-roundedness, but not to greatness, nor even goodness. By constantly switching from one thing to another you are always reaching above your comfort zone, yes, but doing so by resetting your skill and knowledge level to zero.

Mastery comes from a combination of at least several of the following:

@burtonsamograd
burtonsamograd / save-lisp-tree-shake-and-die.lisp
Last active February 11, 2024 20:33
A quick and dirty tree shaker for SBCL, giving about a 40% reduction in dump size.
;; -*- mode: lisp -*-
;;
;; A quick and dirty tree shaker for SBCL. Basically, it destroys the
;; package system and does a gc before saving the lisp image. Gives
;; about a 40% reduction in image size on a basic hello world test.
;; Would like to hear how it works on larger projects.
;;
;; Original idea from: https://groups.google.com/d/msg/comp.lang.lisp/6zpZsWFFW18/WMy4PyA9B4kJ
;;
;; Burton Samograd
@hraban
hraban / pre-commit.md
Last active April 18, 2024 06:46
Prevent accidentally committing debug code in Git
@marick
marick / about_those_lava_lamps.md
Last active June 22, 2022 21:08
About Those Lava Lamps

Around 2006-2007, it was a bit of a fashion to hook lava lamps up to the build server. Normally, the green lava lamp would be on, but if the build failed, it would turn off and the red lava lamp would turn on.

By coincidence, I've actually met, about that time, (probably) the first person to hook up a lava lamp to a build server. It was Alberto Savoia, who'd founded a testing tools company (that did some very interesting things around generative testing that have basically never been noticed). Alberto had noticed that people did not react with any urgency when the build broke. They'd check in broken code and go off to something else, only reacting to the breakage they'd caused when some other programmer pulled the change and had problems.

@bishboria
bishboria / springer-free-maths-books.md
Last active October 3, 2024 09:17
Springer made a bunch of books available for free, these were the direct links
@cbaggers
cbaggers / update.lisp
Created January 27, 2016 18:10
update-swank
(defun update-swank ()
"Called from within the main loop, this keep the lisp repl
working while cepl runs"
(continuable
(let ((connection (or swank::*emacs-connection*
(swank::default-connection))))
(when connection
(swank::handle-requests connection t)))))

Principles of Adult Behavior

  1. Be patient. No matter what.
  2. Don’t badmouth: Assign responsibility, not blame. Say nothing of another you wouldn’t say to him.
  3. Never assume the motives of others are, to them, less noble than yours are to you.
  4. Expand your sense of the possible.
  5. Don’t trouble yourself with matters you truly cannot change.
  6. Expect no more of anyone than you can deliver yourself.
  7. Tolerate ambiguity.
  8. Laugh at yourself frequently.